Embroidering mechanism



J. A. GROE-BLI.

EMBROIDERING MECHANISM. APPLICATION mm was. 1920.

Patented Nov. 29, 1921.

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J. A. GROEBLI- emano'mzamc MECHANISM.

APPLICATION-FILED AUG.6, 1920.

1,398,590., Pz ztented Nov. 29, 1921.

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J. A. GROE EMBROIDERING ME APPLICATION FILED A o.

v-4-Krlwar zrosnrn A. GROEBLI, on EW YORK, N. Y.

EMBROIDERING MECHANISM.

To all whom it may concern: 1

Be it known that I, Josnrrr A. GRoEBLI, a citizen of the United States, and resident of the city, county, and State of New York,

have invented certain new and useful Im.

provements in Embroidering Mechanism, of

' which the following is a specification,

fa/Ty inventon relates to that class of embroidering mechanism wherein tensioned fabric is carried upon transferring means, such as rollers, mounted in a tambour frame, whichmay be shifted manually or automatically into successive stitch positions, the fabric being from time to time, automatically slackened or untensioned, shifted forward,

and tensioned, to present newportions ofthe,

provide means whereby the slackening, shifting, tensioning and other similar functions of theapparatus of the tambour frames of a plurality of embroidering machines may be governed by a single, common, and preferably automatic, mechanism, thereby increasing theefiiciency of such mechanism and avoiding the necessity of duplicating it forthe several embroidering machines.

In the drawings, Figure 1 is a plan view of mechanism governed from a common center and adapted to operate the mechanism of the tambour frames of a plurality of embroidering machines, the principal elements only of the governing mechanism being shown, for clearness; Fig. 2 is a similar view, on an enlarged scale, of the governing mechanism and the connections for onetambour frame; Fig. 3 is an elevation, looking to the right on Fig. 2, the end of the driving shaft and its connections being omitted for clearness; Fig. 4 is an elevation showing the connections for one tambour frame, taken on the line 4, 4 of 2, and Fig.5 is a detail of one of the eccentrics and its strap.

In all the figures the same parts are designated by similar reference numerals.

The common governing mechanism may be similar to that shown in my aforemen.- tioned Patent No. 1,247 ,264. Thus, 26 indicatesa motor, 27 and 28 connecting gears,

Specification of Letters Patent. Application filed August 6, 1920. Serial No. 401,708,

frames.

machine.

Patented Nov. 29,1921.

25- 'a driving shaft, carrying gears 29,30, 48, 49, 64 and 65, adapted, through cooperating gears 31,50- and- 66, 1respectively, to" rotate shafts 22,. 20, 21, in either direction as may be required in'carrying out the funcmeralsdesignate the same parts-in both my former Patent No. 1,247,264 and in the drawings herein. Andas the details of the mechanism "for governing the direction, sequence and extent of the rotation of the shafts 20, 21, 22 are fully described in my aforesaid patent, it is unnecessary to repeat that description, as the operation .ofthe mechanism now to be described will be. readily understood when it is borne in inind that the shafts 20, 21,.22 of the present invention are continuations of the shafts similarly numbered in my Patent No. 1,247 ,264.

Furthermore, the shaft 2990f the drawings represents a continuation, of the shaft '60 tions of the apparatus. These reference nu- 299 of ,myPatent No. 1,247,264. And as the I effect of its rotation-upon the governing mechanism will be fully understood by reference to that patent, I have omitted the details of that governing mechanism from the present drawings. 1

The shaft 20 actuates the lateral tensioning mechanism of the several; tambour Toaccomplish this it is extended through a suitable bearing 40, in a bracket 39, attached to frame 38-of each embroidering machine, and is provided with a plurality of spiral gears 41, 41, each adapted to mesh with a spiralgear 42, carried upon a shaft 48, supported at oneend by .a bell, crank. 44 pivoted in the bracket39, and adapted to be rockedby a pitman rod 45, so as to throw the gears 42.and 41 into and out of mesh.

The other end of each shaft 43" is carried by a suitable bearing 46 on the bracket 39,

and, throughthe knuckle oint 47, shaft 52,

sleeve 53, shaft 54, and knuckle 55, or other suitable flexible connections, turns the shaft. 8 which corresponds to the shaft 8 of mysaid Patent .No. 1,247,264, and operates mecha- .nism like that described in that patent, to.

release and to apply lateral t8nSlOI1" t0-tl1e fabric, as called for in the operation of the The shaft 21 actuates the vertical tensioning mechanism. To accomplish this it is extended through a suitable bearing 60 in the bracket 39 of each embroidering machine,

mechanism.

and isprovided with a plurality of spiral by a suitable bearing 68 in the bracket and,through the knuckle oint 69, shaft 70, sleeve 7-1, shaft 72, and knuckle 7 3, or other suitable, flexible connections, turns the shaft .9 which corresponds to the shaft 9 of my said Patent NO.' 1,247,264 and operates mechanism'like that described in-that pa ent, to release and to apply vertical tension as called form the operation of each machine; i

The shaft 22 actuates the fabric shifting To accomplish this it is extended through a suitable bearing 80 in the bracket 39 of each'embroidering machine, and is'provided witha plurality of spiral gears 81, 81, each adapted to meshwith a spiral-gear 82, carried upon a shaft 83, supported at one end by a bell crank 84 pivoted' in the bracket '39 and adapted to be rocked'by the pitman rod'245 so as to throw the gears-82 and 81 into and out of mesh;

The other end of the shaft 83 is carried by a suitable bearing 84 in the bracket 39,

r and, through .knuckle joint 85, shaft 86,

sleeve 87, shaft 88"and knuckle joint 89,, or

other suitable flexible connections, turns the shaft 10 which corresponds to the shaft 10 of my'said Patent No. 1,247,264, and operates mechanism like that describedin that patent to shift the fabric as called for in the operation of each machine.

The shaft 299 governs the extent of the shifting movement of the fabric.

To accomplish this it is extended through a suitable bearing 90 in the bracket 39 of each embroidering machine, and is provided with a' plurality of spiral gears 91, 91. each adapted to mesh with a spiral gear 92, carried upon a shaft 93, supported at one end by a bell crank 94,-adapted to berocked by thepitman rod 345, so as to throw the gears 92 and 91 into and out of mesh;

The other end of the shaft 93 is carried by a suitable bearing 94, in the bracket 39, and, through the knucklejoint 95, shaft 96, sleeve 97, shaft 98, and knuckle 99, is turned by the shaft 214 which corresponds to the shaft'214 of my said Patent No. 1,247,264,

and operates, as described in that patent, to

govern the extent of the shifting movement of the fabric'as called for in the operation of each embroider'ing machine.

Mounted in. suitable bearings 100, 101 in each of the brackets 39, is a shaft 102, pro-. vided with a crank handle 103, by which it may be rotated, and carryingeccentric cams 104-,- 105, 106 and*107-, which are indicated through the shafts 20, 21, 22"and 299.

by broken lines in 2, a sideview of the cam 104 being shown in Fig. '3, and the other three cams being similar) thereto. These cams cooperate with the straps'114, 115,116 and 117 on the respective pitman rods 45, 145, 245, 345, so that, when the shaft 102 is turned, the movementof its cams will rock the pitman rodsiand their respective bell cranks. causing the latter to raise the shafts 43, 63, 83, 93, so 'asto mesh. their respective spiral gears 42, 62, 82, 92, with their coijperatingspiral gears 41', 61, 81; 91, or to lower the shafts and separate the gears, as may be desired.

-Normally, the tens-ioning and shifting mechanism for each tambour frame is disconnected froin the common governing mechanism, the spiral gears 42, 62, 82, 92 being out of mesh with their cotiperating gears 41,61, 81, 91.

However, whenever it is desired to un-- tension, shift and retention the fabricof. either tambour frame, by turning the hand crank'103 the spiral gears 42, 62, 82, 92 maybe made to mesh with'the gears 41, 61, 81, 91, thus connecting the tensioning and shifting mechanism of that tambour frame with the common governing mechanism,

That governing'mechanism may then be caused to function, under the influence of the motor 26, so that the various steps of releasing the lateral tension,'releasing the vertical tension, shifting the fabric, applying the verticaletension and applying the lateral tension will be carried out, auto= matically, as described in my Patent No. 1,247,264. 4 7 Obviously, also, the mechanism of several off the tambour frames may be connected with the common governing mechanism, as above described, so that the several operations'of releasing the tension, shifting the fabric, and reapplying t'ensionthereto may be carried'out simultaneously on'the several tambour frames, thus permitting one common governing mechanism to function for one orfor a plurality ofseparate tambour frames so that the operations will be carried out as satisfactorily'and efiicientlyfor each tambour frame as would be the case if each were provided with an independent governing mechanism.

To insure accuracy of operation in meshe ingand disconnecting the gears, through the rotation of the'shaft 102, it is preferable to provide meanssuch asanvarr'n 108 on the cam 104, and stops 109 and 110 on the and shortening of the connections between those rods to compensate for the movements of the tambour frame.

The form of mechanism shown in the drawings is intended to illustrate a type of construction by which my improvements may be carried out in practice. And it will be readily appreciated, by those familiar with the art, that details of the construction may be modified, as by the use of mechanical equivalents and the like, without departing from the spirit of my invention or the scope of the claims.

Having thus described my invention what I claim and desire to secure by Letters Patent of the United States is V 1. In embroidering mechanism, the combination, with a plurality of embroidering machines, each embodying fabric carrying, shifting and tensioning means, of common means for controlling the operation of the shifting and tensioning means to shift and tension the fabric on the carrying means of each and optionally of a plurality of the several embroidering machines.

2. In embroidering mechanism, the combination, with a plurality of embroidering machines, each embodying fabric carrying, shifting and tensioning means, of common, automatic means for controlling the opera tion of the shifting and tensioning means to shift and tension the fabric on the carrying means of the several embroidering machines both separately and simultaneously.

3. In embroidering mechanism, the combination, with a plurality of embroidering machines, each embodying fabric carrying, shifting and tensioning means, of common means for controlling the operation of the shifting and tensioning means to shift and tension the fabric on the carrying means of the several embroidering machines both separately and simultaneously.

4. In embroidering mechanism, the combination, with a plurality of embroidering machines, each embodying tambour frames provided with fabric shifting and tensioning means, of common means for controlling the operation of the shifting and tensioning means to shift and tension the fabric on the tambour frames of the several embroidering machines both separately and simultaneously.

5. In embroidering mechanism, the combination, with a plurality of embroidering machines, each embodying fabric carrying,

shifting and tensioning'means to shift and tension the fabric on the carrying means of the several embroidering machines, and means forsimultaneously bringing the shifting and tensioning means of each of selective pluralities of such embroidering machines under the control of said common means.

7. In embroidering mechanism, the combination, with a plurality of embroidering machines, each embodying fabric carrying means, and means for performing a plurality of functions in the shifting and tensioning of a fabric on the carrying means, of common means for controlling the sequence and extent of the carrying out of such functions of the embroidering mas chines separately and optionally concur rently. I

8 In embroideringmechanism, the combination, with a plurality of embroidering machines, each embodying fabric carrying means, and means for performing a plurality of functions in the shifting and tensioning of a fabric on the carryingmeans,

of common means for controlling the se-' quence and extent of the carrying out of such functions of each embroidering machine independently and of either of several selective vpluralities of such machines concurrently.

9. In embroidering mechanism, the combination, with a plurality of embroidering machines, each embodying fabric carrying means, and meansfor performing a plurality of functions in the shifting and tensioning of a fabric'on the carrying means, of common, automatic means for controlling the sequence and extent of the carrying out of such functions of the embroidering machines separately and, optionally concurrentl I I y JOSEPH A. GROEBLI. 

